. >> reporter: doug leslie from a neighboring town, knew his 15-year-old daughter lauren was in trouble when he got a late night phone call. >> midnight i get a call from the cops saying that -- asking if lauren was there. i said what's going on? he said if lauren is home, somebody is using her id. i thought that was strange. >> what does that mean someone was using her id? >> well, they found her id in a vehicle. >> doug began driving along the highway of tears until he found police lights. his daughter's body had been discovered. >> she was molested, beat over the head with a pipe wrench and her throat was cut. >> reporter: who could do such a thing? >> not a human, for sure. >> reporter: "48 hours" spent months following the cases along the highway of tears. now after decades of despair, there is hope. >> peter, we have a major break in this case. it involves an american. >> peter van zandt joins us at the table. what a nice way to end that piece. that's a tease. what do authorities know about the american suspect? >> his nam is bobby jack fowler. he lives in 11 different states in t